Douglas John Boland

Eucalyptus fusiformis, commonly known as the grey ironbark or Nambucca ironbark is a tree that is endemic to eastern Australia. It has thick, blackish, "ironbark" on the trunk and branches, lance-shaped to curved adult leaves, flower buds in groups of seven, white flowers and conical to pear-shaped fruit.

Eucalyptus distans, commonly known as the Katherine box, is a species of small tree that is endemic to northern parts of Australia. It has rough, fibrous grey bark, dull, narrow lance-shaped adult leaves, flower buds in groups of seven, creamy white flowers and cup-shaped to hemispherical or conical fruit.

Eucalyptus deuaensis, commonly known as the Mongamulla mallee, is a species of mallee or small tree endemic to a small area of New South Wales. It has smooth bark, lance-shaped to curved adult leaves, diamond-shaped buds arranged in leaf axils in groups of seven, white flowers and bell-shaped, hemispherical or conical fruit.

Eucalyptus wilcoxii, commonly known as Deua gum, is a species of mallee or tree that is endemic to south-eastern New South Wales. It has smooth bark, lance-shaped adult leaves, flower buds in groups of three, white flowers and cup-shaped or bell-shaped fruit.

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Eucalyptus petiolaris, commonly known as Eyre Peninsula blue gum, water gum or blue gum, is a species of small to medium-sized tree that is endemic to South Australia. It is also naturalised in Western Australia. It has rough, flaky bark on the trunk, smooth greyish bark above, lance-shaped adult leaves, flower buds in groups of three, cream-coloured, yellow, pink or red flowers and cup-shaped or barrel-shaped fruit.

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